MAX8576 MAXIM [Maxim Integrated Products], MAX8576 Datasheet - Page 3

• Manufacturer Part Number: MAX8576
• Description: 3V to 28V Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (continued)
(V
V
11.5V; DH = unconnected; DL = unconnected; T
ELECTRICAL CHARACTERISTICS
(V
V
11.5V; DH = unconnected; DL = unconnected; T
High-Side Current-Sense
Overcurrent Trip Adjustment
Range
Soft-Start Internal Resistance
Fault Hiccup Internal SS Pulldown
Current
DRIVER SPECIFICATIONS
DH Driver Resistance
DL Driver Resistance
Dead Time
DH Minimum On-Time
DL Minimum On-Time
BST Current
EN
Input Voltage Low
Input Voltage High
THERMAL SHUTDOWN
Thermal Shutdown
SUPPLY VOLTAGES
IN Supply Voltage
V
VL Output Voltage
VL Maximum Output Current
CC
CC
IN
IN
CC
= 12V (MAX8576/MAX8577 only), 4.7µF capacitor from VL (MAX8576/MAX8577 only) or V
= 12V (MAX8576/MAX8577 only), 4.7µF capacitor from VL (MAX8576/MAX8577 only) or V
= V
= V
Input Voltage
EN
EN
PARAMETER
PARAMETER
= 5V (MAX8578/MAX8579 only); 0.01µF capacitor from SS to GND; V
= 5V (MAX8578/MAX8579 only); 0.01µF capacitor from SS to GND; V
_______________________________________________________________________________________
3V to 28V Input, Low-Cost, Hysteretic
Synchronous Step-Down Controllers
V
V
Sourcing current
Sinking current
Sourcing current
Sinking current
DH low to DL high and DL low to DH high
(adaptive)
Normal operation
Current fault
V
V
V
Rising temperature, hysteresis = 20 C (typ)
MAX8576/MAX8577
IN = VL, MAX8576/MAX8577
MAX8576/MAX8577
I
MAX8576/MAX8577
VL
IN
LX
BST
CC
CC
= 10mA, MAX8576/MAX8577
- V
< V
= 3V (MAX8578/MAX8579)
= 5.5V (MAX8578/MAX8579)
- V
OCSET
OCSET
LX
= 5.5V, V
A
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
= -40°C to +85°C, unless otherwise noted. Note 3)
and V
LX
FB
CONDITIONS
CONDITIONS
= 28V, V
< V
SS
FB
< V
SS
FB
FB
= 0.65V; V
= 0.65V; V
BST
BST
CC
CC
0.05
MIN
4.75
MIN
1.5
(MAX8578/MAX8579 only) to GND;
(MAX8578/MAX8579 only) to GND;
5.5
3.0
3.0
45
20
= 5V; V
= 5V; V
LX
LX
+160
TYP
1.65
TYP
250
140
120
580
2.6
1.9
2.6
1.1
80
40
= V
= V
GND
GND
A
= +25°C.)
MAX
MAX
0.40
28.0
5.25
125
245
220
4.0
3.0
4.0
2.0
0.7
5.5
5.5
= 0V; V
= 0V; V
OCSET
OCSET
UNITS
UNITS
mA
mA
k
nA
ns
ns
ns
V
V
V
V
V
V
C
3
=
=